The 22-year-old Bryant has nine hits in his last 23 at-bats with a home run and five RBI in raising his average to .311. He also boasts a fine .440 on-base percentage and has four stolen bases.
Franco, who hit .320 with 31 home runs and 103 RBI in 2013, has just two doubles, four RBI and five runs. He also has 16 strikeouts and six walks.
On Monday, Phillies general manager Ruben Amaro hinted Franco's slow start has to do with the chilly weather in Philadelphia.
"He hasn't played in the cold weather all that much," Amaro said, per The Philadelphia Daily News. "He had a poor start at (Class A) Lakewood, and then got hot."
The 22-year-old Polanco has at least two hits in six of his last 10 games. He slammed three hits, including a home run, scored three and drove in four on Tuesday.
Polanco owns an impressive stat line of .419/.456/.649. He has 20 RBI in 74 at-bats with just 10 strikeouts.
Top pitching prospect
Bradley raised his earned run average with Triple-A Reno to 3.98 on Monday with his second straight poor performance. He failed to reach the sixth inning again, this time by giving up three earned runs in four innings.
He has yielded 19 hits and eight walks in 20 1/3 innings, though he has also displayed his stuff by striking out 20.
Valbuena is batting .250 with three RBI in 17 games. He has no home runs, three doubles, six runs, 10 strikeouts and 12 walks. He has a .423 on-base percentage.
However, manager Mike Redmond said the Marlins will continue to monitor his workload.
"We showed that last year how we kind of handled him," Redmond said of Fernandez, per The Miami Herald. "[An innings limit] will be a conversation to have later in the year, end of the year. We'll see how it goes. But we've talked about possibly giving him extra days when we can throughout the year to save him and make sure he's fresh at the end of the year as well."